© NASA
The colours of the planets depend on how you look at them. With the naked eye, only the closest planets are bright enough for colours to be discernible. Mars is notoriously red because we can see through its thin, transparent atmosphere to a surface covered in rock dust that is literally rustred, thanks to the strongly oxidising environment. When we look at Venus we see sunlight reflected off its global cloud tops, which are dazzlingly bright and white.